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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">The DESFire stack portion of this firmware source</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">is free software written by Maxie Dion Schmidt (@maxieds):</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">You can redistribute it and/or modify</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">it under the terms of this license.</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">This program is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">The complete source distribution of</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">this firmware is available at the following link:</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">https://github.com/maxieds/ChameleonMiniFirmwareDESFireStack.</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">Based in part on the original DESFire code created by</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">@dev-zzo (GitHub handle) [Dmitry Janushkevich] available at</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">https://github.com/dev-zzo/ChameleonMini/tree/desfire.</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">This notice must be retained at the top of all source files where indicated.</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> * DESFireISO14443Support.h</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"> * Maxie D. Schmidt (github.com/maxieds)</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#ifndef __DESFIRE_ISO14443_SUPPORT_H__</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#define __DESFIRE_ISO14443_SUPPORT_H__</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &quot;DESFireFirmwareSettings.h&quot;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#include &quot;../ISO14443-3A.h&quot;</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#include &quot;../../Codec/ISO14443-2A.h&quot;</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">/* General structure of a ISO 14443-4 block:</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment"> * PCB (protocol control byte)</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment"> * CID (card identifier byte; presence controlled by PCB)</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment"> * NAD (node address byte; presence controlled by PCB)</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment"> * Payload (arbitrary bytes)</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"> * CRC-16</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_RATS                  0xE0</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#define ISO14443A_RATS_FRAME_SIZE           (6 * BITS_PER_BYTE) //(4 * 8) </span><span class="comment">/* Bit */</span><span class="preprocessor"></span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_RNAK                  0xB2</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#define ISO14443A_CRC_FRAME_SIZE           (ISO14443A_CRCA_SIZE * BITS_PER_BYTE)</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="preprocessor">#define ISO14443_PCB_BLOCK_TYPE_MASK        0xC0</span></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#define ISO14443_PCB_I_BLOCK                0x00</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#define ISO14443_PCB_R_BLOCK                0x80</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#define ISO14443_PCB_S_BLOCK                0xC0</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">#define ISO14443_PCB_I_BLOCK_STATIC         0x02</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="preprocessor">#define ISO14443_PCB_R_BLOCK_STATIC         0xA2</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor">#define ISO14443_PCB_S_BLOCK_STATIC         0xC2</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor">#define ISO14443_PCB_BLOCK_NUMBER_MASK      0x01</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#define ISO14443_PCB_HAS_NAD_MASK           0x04</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#define ISO14443_PCB_HAS_CID_MASK           0x08</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#define ISO14443_PCB_I_BLOCK_CHAINING_MASK  0x10</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#define ISO14443_PCB_R_BLOCK_ACKNAK_MASK    0x10</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#define ISO14443_PCB_R_BLOCK_ACK            0x00</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor">#define ISO14443_PCB_R_BLOCK_NAK            0x10</span></div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor">#define ISO14443_R_BLOCK_SIZE               1 </span><span class="comment">/* Bytes */</span><span class="preprocessor"></span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#define ISO14443_PCB_S_DESELECT             (ISO14443_PCB_S_BLOCK_STATIC)</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="preprocessor">#define ISO14443_PCB_S_DESELECT_V2          0xCA</span></div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="preprocessor">#define ISO14443_PCB_S_WTX                  (ISO14443_PCB_S_BLOCK_STATIC | 0x30)</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_PPS                   0xD0</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="preprocessor">#define IS_ISO14443A_4_COMPLIANT(buf)       (buf[0] &amp; 0x20)</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="preprocessor">#define MAKE_ISO14443A_4_COMPLIANT(buf)     (buf[0] |= 0x20)</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment"> * ISO/IEC 14443-4 implementation</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment"> * To support EV2 cards emulation, proper support for handling 14443-4</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment"> * blocks will be implemented.</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment"> * Currently NOT supported:</span></div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment"> * + Block chaining</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment"> * + Frame waiting time extension</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="keyword">typedef</span> <span class="keyword">enum</span> DESFIRE_FIRMWARE_ENUM_PACKING {</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    ISO14443_4_STATE_EXPECT_RATS,</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    ISO14443_4_STATE_ACTIVE,</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    ISO14443_4_STATE_LAST,</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;} Iso144434StateType;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">extern</span> Iso144434StateType Iso144434State;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keyword">extern</span> uint8_t Iso144434BlockNumber;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="keyword">extern</span> uint8_t Iso144434CardID;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="keyword">extern</span> uint8_t LastReaderSentCmd;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment">/* Setup some fuzzy response handling for problematic readers like the ACR122U */</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="preprocessor">#define MAX_STATE_RETRY_COUNT               (4)</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="keyword">extern</span> uint8_t StateRetryCount;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="keywordtype">bool</span> CheckStateRetryCount(<span class="keywordtype">bool</span> resetByDefault);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="keywordtype">bool</span> CheckStateRetryCount2(<span class="keywordtype">bool</span> resetByDefault, <span class="keywordtype">bool</span> performLogging);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="preprocessor">#define IGNORE_ACK_BYTE               (0x92)</span></div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">/* Support functions */</span></div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="keywordtype">void</span> ISO144434SwitchState(Iso144434StateType NewState);</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="keywordtype">void</span> ISO144434SwitchState2(Iso144434StateType NewState, <span class="keywordtype">bool</span> performLogging);</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="keywordtype">void</span> ISO144434Reset(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="keyword">static</span> uint16_t ISO144434ProcessBlock(uint8_t *Buffer, uint16_t ByteCount, uint16_t BitCount);</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment"> * ISO/IEC 14443-3A implementation</span></div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="preprocessor">#define ISO14443A_CRCA_INIT      ((uint16_t) 0x6363)</span></div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="preprocessor">#define GetAndSetBufferCRCA(Buffer, ByteCount)     ({                                \</span></div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="preprocessor">     uint16_t fullReturnBits = 0;                                                    \</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="preprocessor">     ISO14443AAppendCRCA(Buffer, ByteCount);                                         \</span></div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="preprocessor">     fullReturnBits = ByteCount * BITS_PER_BYTE + ISO14443A_CRC_FRAME_SIZE;          \</span></div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="preprocessor">     fullReturnBits;                                                                 \</span></div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="preprocessor">     })</span></div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment">/* TODO: Should we return CRC bytes when giving a NO_RESPONSE ??? ... Apparently &quot;No&quot;. */</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="preprocessor">#define GetAndSetNoResponseCRCA(Buffer)            ({                                \</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="preprocessor">     uint16_t fullReturnBits = 0;                                                    \</span></div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="preprocessor">     ISO14443AAppendCRCA(Buffer, 0);                                                 \</span></div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="preprocessor">     fullReturnBits = ISO14443A_CRC_FRAME_SIZE;                                      \</span></div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="preprocessor">     fullReturnBits;                                                                 \</span></div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="preprocessor">     })</span></div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;uint16_t ISO14443AUpdateCRCA(<span class="keyword">const</span> uint8_t *Buffer, uint16_t ByteCount, uint16_t InitCRCA);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="keyword">typedef</span> <span class="keyword">enum</span> DESFIRE_FIRMWARE_ENUM_PACKING {</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="comment">/* The card is powered up but not selected */</span></div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    ISO14443_3A_STATE_IDLE = ISO14443_4_STATE_LAST,</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="comment">/* Entered on REQA or WUPA; anticollision is being performed */</span></div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    ISO14443_3A_STATE_READY1,</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    ISO14443_3A_STATE_READY2,</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <span class="comment">/* Entered when the card has been selected */</span></div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    ISO14443_3A_STATE_ACTIVE,</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="comment">/* Something went wrong or we&#39;ve received a halt command */</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    ISO14443_3A_STATE_HALT,</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;} Iso144433AStateType;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="keyword">extern</span> Iso144433AStateType Iso144433AState;</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="keyword">extern</span> Iso144433AStateType Iso144433AIdleState;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="comment">/* Support functions */</span></div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="keywordtype">void</span> ISO144433ASwitchState(Iso144433AStateType NewState);</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="keywordtype">void</span> ISO144433AReset(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="keywordtype">void</span> ISO144433AHalt(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="keywordtype">bool</span> ISO144433AIsHalt(<span class="keyword">const</span> uint8_t *Buffer, uint16_t BitCount);</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;uint16_t ISO144433APiccProcess(uint8_t *Buffer, uint16_t BitCount);</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="preprocessor">#endif</span></div></div><!-- fragment --></div><!-- contents -->
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